Super Bound States in the Continuum on Photonic Flatbands: Concept, Experimental Realization, and Optical Trapping Demonstration
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2019
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| _version_ | 1866915391254560768 |
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| author | Le, Ngoc Duc Bouteyre, Paul Kheir-Aldine, Ali Dubois, Florian Cueff, Sébastien Berguiga, Lotfi Letartre, Xavier Viktorovitch, Pierre Benyattou, Taha Nguyen, Hai Son |
| author_facet | Le, Ngoc Duc Bouteyre, Paul Kheir-Aldine, Ali Dubois, Florian Cueff, Sébastien Berguiga, Lotfi Letartre, Xavier Viktorovitch, Pierre Benyattou, Taha Nguyen, Hai Son |
| contents | In this work, we theoretically propose and experimentally demonstrate the formation of a super bound state in a continuum (BIC) on a photonic crystal flat band. This unique state simultaneously exhibits an enhanced quality factor and near-zero group velocity across an extended region of the Brillouin zone. It is achieved at the topological transition when a symmetry-protected BIC pinned at $k=0$ merges with two Friedrich-Wintgen quasi-BICs, which arise from destructive interference between lossy photonic modes of opposite symmetries. As a proof-of-concept, we employ the super flat BIC to demonstrate three-dimensional optical trapping of individual particles. Our findings present a novel approach to engineering both the real and imaginary components of photonic states on a subwavelength scale for innovative optoelectronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1905_00215 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Super Bound States in the Continuum on Photonic Flatbands: Concept, Experimental Realization, and Optical Trapping Demonstration Le, Ngoc Duc Bouteyre, Paul Kheir-Aldine, Ali Dubois, Florian Cueff, Sébastien Berguiga, Lotfi Letartre, Xavier Viktorovitch, Pierre Benyattou, Taha Nguyen, Hai Son Optics In this work, we theoretically propose and experimentally demonstrate the formation of a super bound state in a continuum (BIC) on a photonic crystal flat band. This unique state simultaneously exhibits an enhanced quality factor and near-zero group velocity across an extended region of the Brillouin zone. It is achieved at the topological transition when a symmetry-protected BIC pinned at $k=0$ merges with two Friedrich-Wintgen quasi-BICs, which arise from destructive interference between lossy photonic modes of opposite symmetries. As a proof-of-concept, we employ the super flat BIC to demonstrate three-dimensional optical trapping of individual particles. Our findings present a novel approach to engineering both the real and imaginary components of photonic states on a subwavelength scale for innovative optoelectronic devices. |
| title | Super Bound States in the Continuum on Photonic Flatbands: Concept, Experimental Realization, and Optical Trapping Demonstration |
| topic | Optics |
| url | https://arxiv.org/abs/1905.00215 |